BFQ81 Vishay, BFQ81 Datasheet - Page 6

• Manufacturer Part Number: BFQ81
• Description: Silicon Npn Planar Rf Transistor
• Manufacturer: Vishay

BFQ81
Vishay Semiconductors
Typical Characteristics (Tamb = 25 °C unless otherwise specified)
www.vishay.com
6
96 12159
V
Figure 1. Total Power Dissipation vs. Ambient Temperature
CE
10
300
250
200
150
100
/V
50
0
0
20
T
I
amb
C
20
/mA
40
- Ambient Temperature ( °C )
60
80 100 120 140 160
f/MHz
1000
1200
1500
1800
2000
2200
2500
2800
3000
1000
1200
1500
1800
2000
2200
2500
2800
3000
300
500
800
100
300
500
800
0.2.64
0.349
0.259
0.215
0.208
0.209
0.222
0.241
0.256
0.275
0.304
0.332
0.364
0.465
02.49
0.201
0.189
0.188
0.189
0.206
0.226
0.244
0.297
0.322
0.351
MAG
deg
LIN
S11
-127.9
-157.9
-170.0
-121.5
-148.9
-174.5
176.9
163.8
152.4
145.9
139.7
131.6
123.7
118.7
175.6
166.4
155.9
147.1
141.7
135.4
128.6
123.2
118.2
-99.0
-63.2
ANG
11.39
27.66
12.49
MAG
7.34
4.79
3.92
3.32
2.75
2.34
2.15
2.01
1.82
1.68
1.56
7.77
4.99
4.07
3.44
2.84
2.42
2.22
2.07
1.88
1.73
1.61
deg
LIN
12871
S21
7000
6000
5000
4000
3000
2000
1000
Figure 2. Transition Frequency vs. Collector Current
109.9
133.0
102.6
ANG
96.4
84.5
79.0
73.5
66.3
59.4
55.5
51.9
45.8
39.5
65.7
91.7
81.4
76.6
71.5
65.0
58.4
54.7
51.0
45.2
39.3
35.3
0
0
f = 500 MHz
5
I
C
0.037
0.052
0.075
0.092
0.109
0.134
0.161
0.180
0.198
0.225
0.252
0.268
0.015
0.033
0.050
0.076
0.094
0.112
0.138
0.165
0.184
0.203
0.230
0.257
0.274
MAG
- Collector Current ( mA )
deg
LIN
10
S12
15
ANG
63.8
67.2
70.7
71.8
72.0
71.9
71.6
70.7
69.6
68.4
66.3
64.6
68.1
70.3
73.6
75.2
75.3
74.7
73.7
72.6
71.4
70.3
68.4
66.0
64.2
20
V
CE
25
Document Number 85023
= 10 V
1 V
5 V
0.605
0.541
0.523
0.524
0.523
0.520
0.517
0.514
0.508
0.502
0.481
0.467
0.762
0.541
0.509
0.506
0.511
0.511
0.510
0.507
0.504
0.499
0.492
0.470
0.453
MAG
deg
30
LIN
Rev. 1.5, 28-Apr-05
S22
-20.5
-17.1
-15.7
-16.5
-18.0
-21.2
-24.9
-27.7
-30.6
-35.6
-40.7
-43.8
-20.1
-17.3
-13.6
-12.7
-13.9
-15.9
-19.4
-23.3
-26.2
-28.9
-34.3
-39.5
-42.8
ANG